I remember learning how DNA evidence worked in my Biology course. I always thought it was "proving" a 1-to-1 match in the DNA sequence, but when I learned it was just because gel electrophoresis provided for similar patterns when DNA was subjected to the same enzymes, it was a bit surprising. Certainly not the "proof" most people think it is, but rather a highly unlikely coincidence.

Edit: It's like trying to compare whether or not 2 books are the same. Rather than reading the words in order and seeing if they're identical, you throw both books in separate blenders, then count the number of paper scraps that contain the letter E.

I guess none have avoided it entirely, but much of the Western world has seemed to avoid this for the most part. For example, Obama didn't have to stage a coup to take power. And most leaders of Western worlds don't blatently screw over their country for money, at least not as much as Latin America / Africa / Middle East.

It's not cool to go through a thread and downvote everyone's comments just because you are angry that they reposted something. The downvote button is used to filter out content that does not contribute to the community or that otherwise violates basic rules of Reddiquette.

Try being less upset about reposts. If not everyone has seen it before, they will upvote it, even if it can be found via the search function. This is because it contributes to the community and discussion that day. Sort of like a re-run on TV or a radio station playing a song that it's played before. Not everyone has their TV or radio on all the time, so it could very well be new for many people.